Help with physics problem (electrical attraction)?

Question

The particles in the nucleus of an atom are approximately 1.00×10−15 apart, while the electrons in an atom are about 1.00×10−10 from the nucleus.

Calculate the electrical attraction that a proton in a nucleus exerts on an orbiting electron if the two particles are 1.18×10−10 apart.

Answer 1

This is Coulomb's law, which is very similar in form to that of gravitational attraction:



F = k q1q2/r²

k = Coulomb's constant

q1 = proton charge

q2 = electron charge

r = given

You can look up the values for Coulomb's constant and the proton and electron charges in Wikipedia. Here's a link to get you started:

http://en.wikipedia.org/wiki/Coulomb%27s...